US3922445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer printing sheet
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1973-05-18
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Granted: 1975-11-25
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Expires: 1993-05-18
Abstract
Abstract A heat transfer printing sheet wherein a pattern comprising a basic dye having a poor heat transferable property, an oxidizing agent having the property of increasing the heat transferable property of the basic dye and a binder is formed on a base support sheet and a process for heat transfer printing wherein the above heat transfer printing sheet is brought into contact with a material to be transfer printed with the surface of the heat transfer printing sheet which contains said pattern, and the whole is heated under a pressure to effect the transfer of the basic dye but not of the oxidizing agent and the binder and then the heat transfer printing sheet is peeled off from the latter to transfer print the optional pattern onto said material. The pattern can comprise two layers in which one comprises the basic dye and the binder and other comprises the oxidizing agent and the binder. The base support sheet can be formed of a resin film through which the basic dye cannot be passed when the heat transfer printing is not carried out. The pattern can be coated with a resin film through which the basic dye cannot be passed when the heat transfer printing is not carried out, but can be passed when the heat transfer printing is carried out.
Inventors
- 👤 Shogo Mizuno
- 👤 Sumio Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:26
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/035; B41M5/0356; D; D06; D06P; D06P5/00; D06P5/003; D06P5/004; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
74 words
A HEAT TRANSFER PRINTING SHEET COMPRISING A BASE SUPPORT SHEET HAVING FORMED THEREON A PATTERN COMPRISING A BASIC DYE HAVING A POOR HEAT TRANSFERABLE PROPERTY, AND OXIDIZING AGENT WHICH IS CAPABLE OF SUFFICIENTLY INCREASING THE HEAT TRANSFERABLE PROPERTY OF THE BASIC DYE WHEN SUBJECTED TO HEATING DURING CONTACT WITH A MATERIAL TO WHICH THE PATTERN IS TO BE TRANSFER-PRINTED SO THAT ONLY THE BASIC DYE CAN BE TRANSFERRED TO SAID MATERIAL, AND A BINDER.
Claim 2
Dependent Claim
74 words
A HEAT TRANSFER PRINTING SHEET COMPRISING A BASE SUPPORT SHEET HAVING FORMED THEREON A PATTERN COMPRISING A BASIC DYE HAVING A POOR HEAT TRANSFERABLE PROPERTY, AND OXIDIZING AGENT WHICH IS CAPABLE OF SUFFICIENTLY INCREASING THE HEAT TRANSFERABLE PROPERTY OF THE BASIC DYE WHEN SUBJECTED TO HEATING DURING CONTACT WITH A MATERIAL TO WHICH THE PATTERN IS TO BE TRANSFER-PRINTED SO THAT ONLY THE BASIC DYE CAN BE TRANSFERRED TO SAID MATERIAL, AND A BINDER.
Claim 3
Dependent Claim
31 words
The heat transfer printing sheet of claim 1, wherein the pattern comprises an underlayer comprising the basic dye and the binder and an overlayer comprising the oxidizing agent and the binder.
Claim 4
Dependent Claim
31 words
The heat transfer printing sheet of claim 1, wherein the pattern comprises an underlayer comprising the oxidizing agent and the binder and an overlayer comprising the basic dye and the binder.
Claim 5
Dependent Claim
36 words
The heat transfer printing sheet of claim 1, wherein the base support sheet comprises a material selected from the group consisting of paper, converted paper, cellophane, synthetic resin films, metal foils and plates and laminates thereof.
Claim 6
Dependent Claim
23 words
The heat transfer printing sheet of claim 1, wherein the base support sheet is made of a material having a thermal resistance property.
Claim 7
Dependent Claim
66 words
The heat transfer printing sheet of claim 1, wherein the basic dye is selected from the group consisting of methine (cyanine) basic dyes and cationic dyes, diphenylmethane basic dyes and cationic dyes, triphenylmethane basic dyes and cationic dyes, xanthene basic dyes and cationic dyes, acridine basic dyes and cationic dyes, quinoneimine basic dyes and cationic dyes, anthraquinone basic dyes and cationic dyes containing a quarternary amine.
Claim 8
Dependent Claim
78 words
The heat transfer printing sheet of claim 6, wherein the basic dye is selected from the group consisting of Aizen Cathilon Yellow 3GLH (C.I. 48055), Aizen Cathilon Red 6BH (C.I. 48020), Malachite Green (C.I. 42000), Crystal Violet (C.I. 42555), Aizen Cathilon Blue 5G (C.I. 51005), Aizen Basic Cyanine 6GH (C.I. 42025), Aizen Methylene Blue FZ (C.I. 52015), Aizen Cathilon Brilliant Yellow 5GLH (C.I. Basic yellow 13), Aizen Cathilon Orange RH (C.I. 48040) and Astrazon Pink FG (C.I. 48015).
Claim 9
Dependent Claim
44 words
The heat transfer printing sheet of claim 1, wherein the oxidizing agent is selected from the group consisting of permanganic acid and permanganate salts therEof; chromic acid and chromate, dichromate and chloride salts thereof; hydrogen peroxide; and alkali metal and alkaline earth metal peroxides.
Claim 10
Dependent Claim
55 words
The heat transfer printing sheet of claim 8, wherein said ozidizing agent is selected from the group consisting of permanganic acid, potassium permanganate, sodium permanganate, chromic acid, potassium chromate, potassium dichromate, sodium chromate, ammonium chromate, sodium dichromate, ammonium dichromate, magnesium chromate, calcium chromate, potassium chromate, chromyl chloride, hydrogen peroxide and sodium, barium and calcium peroxides.
Claim 11
Dependent Claim
45 words
The heat transfer printing sheet of claim 1, wherein the binder is selected from the group consisting of methylcellulose, ethylcellulose, carboxymethylcellulose, cellulose acetate, cellulose butyrate, sodium alginate, polyvinyl alcohol, polyvinyl butyral acrylate resins, polyvinyl pyrrolidone, polyvinyl methyl ether, starch, gum arabic, gum tragacanth and gelatin.
Claim 12
Dependent Claim
51 words
The heat transfer printing sheet of claim 1, wherein a resin film through which the basic dye cannot be passed unless it is subjected to a heat transfer printing step but through which it can be passed when the heat transfer printing step is carried out is disposed on said pattern.
Claim 13
Dependent Claim
28 words
The heat transfer printing sheet of claim 11, wherein said resin is water-soluble and is selected from the group consisting of polyvinyl alcohol, sodium polyacrylate and polyvinyl pyrrolidone.
Claim 14
Dependent Claim
34 words
The heat transfer printing sheet of claim 11, wherein said resin is oil-soluble and is selected from the group consisting of xylene resins, rosin-modified phenol resins, polyvinyl butyral epoxy resins, polystyrene and petroleum resins.
Claim 15
Dependent Claim
24 words
The heat transfer printing sheet of claim 11, wherein said resin film is a laminated film consisting of at least two different resin films.
Claim 16
Dependent Claim
38 words
The heat transfer printing sheet of claim 1, wherein the base support sheet is preliminarily coated with a resin film through which the basic dye cannot be passed unless it is subjected to a heat transfer printing step.
Claim 17
Dependent Claim
83 words
The heat transfer printing sheet of claim 1, wherein the base support sheet is preliminarily coated with a resin film through which the basic dye cannot be passed unless it is subjected to a heat transfer printing step and also wherein the pattern is coated with a resin film through which the basic dye cannot be passed unless it is subjected to a heat transfer printing step but through which it can be passed when the heat transfer printing step is carried out.
Claim 18
Dependent Claim
33 words
The heat transfer printing sheet of claim 1, wherein the oxidiaing agent acts to sufficiently increase the heat transferable property of the basic dye at a temperature of from about 80* to 250*C.
Claim 19
Dependent Claim
24 words
The heat transfer printing sheet of claim 17, wherein said heating is conducted under a pressure of from about 50 g/cm2 to 20 kg/cm2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |